1Z0-804 Latest Exam Simulator certifications are thought to be the best way to get good jobs in the high-demanding market. There is a large range of 1Z0-804 Latest Exam Simulator certifications that can help you improve your professional worth and make your dreams come true. Our 1Z0-804 Latest Exam Simulator certification practice materials provide you with a wonderful opportunity to get your dream certification with confidence and ensure your success by your first attempt. Although the pass rate of our 1Z0-804 Latest Exam Simulator study materials can be said to be the best compared with that of other exam tests, our experts all are never satisfied with the current results because they know the truth that only through steady progress can our 1Z0-804 Latest Exam Simulator preparation braindumps win a place in the field of exam question making forever. Therefore, buying our 1Z0-804 Latest Exam Simulator actual study guide will surprise you with high grades and you are more likely to get the certification easily. Any of the three versions can work in an offline state, and the version makes it possible that the websites is available offline.
Java and Middleware 1Z0-804 (PDF, APP, software).
On the other hand, our 1Z0-804 - Java SE 7 Programmer II Exam Latest Exam Simulator test guides also focus on key knowledge and points that are difficult to understand to help customers better absorb knowledge. Up to now, there are three versions of 1Z0-804 Reliable Test Duration exam materials for your choice. So high-quality contents and flexible choices of 1Z0-804 Reliable Test Duration learning mode will bring about the excellent learning experience for you.
It is certain that the pass rate of our 1Z0-804 Latest Exam Simulator study guide among our customers is the most essential criteria to check out whether our 1Z0-804 Latest Exam Simulator training materials are effective or not. The good news is that according to statistics, under the help of our 1Z0-804 Latest Exam Simulator learning dumps, the pass rate among our customers has reached as high as 98% to 100%. It is strongly proved that we are professonal in this career and our 1Z0-804 Latest Exam Simulator exam braindumps are very popular.
Oracle 1Z0-804 Latest Exam Simulator - Nowadays, it is hard to find a desirable job.
As is known to us, the leading status of the knowledge-based economy has been established progressively. It is more and more important for us to keep pace with the changeable world and improve ourselves for the beautiful life. So the 1Z0-804 Latest Exam Simulator certification has also become more and more important for all people. Because a lot of people long to improve themselves and get the decent job. In this circumstance, more and more people will ponder the question how to get the 1Z0-804 Latest Exam Simulator certification successfully in a short time.
Luckily, we are going to tell you a good new that the demo of the 1Z0-804 Latest Exam Simulator study materials are easily available in our company. If you buy the study materials from our company, we are glad to offer you with the best demo of our study materials.
1Z0-804 PDF DEMO:
QUESTION NO: 1
Which two properly implement a Singleton pattern?
A.class Singleton {
private static Singleton instance;
private Singleton () {}
public static synchronized Singleton getInstance() {
if (instance == null) {
instance = new Singleton ();
}
return instance;
}
}
B.class Singleton {
private static Singleton instance = new Singleton();
protected Singleton () {}
public static Singleton getInstance () {
return instance;
}
}
C.class Singleton {
Singleton () {}
private static class SingletonHolder {
private static final Singleton INSTANCE = new Singleton ();
}
public static Singleton getInstance () {
return SingletonHolder.INSTANCE; } }
D.enum Singleton {
INSTANCE;
}
Answer: A,D
Explanation:
A: Here the method for getting the reference to the SingleTon object is correct.
B: The constructor should be private
C: The constructor should be private
Note: Java has several design patterns Singleton Pattern being the most commonly used. Java
Singleton pattern belongs to the family of design patterns, that govern the instantiation process. This design pattern proposes that at any time there can only be one instance of a singleton (object) created by the JVM.
The class's default constructor is made private, which prevents the direct instantiation of the object by others (Other Classes). A static modifier is applied to the instance method that returns the object as it then makes this method a class level method that can be accessed without creating an object.
OPTION A == SHOW THE LAZY initialization WITHOUT DOUBLE CHECKED LOCKING TECHNIQUE ,BUT
ITS CORRECT OPTION D == Serialzation and thraead-safety guaranteed and with couple of line of code enum Singleton pattern is best way to create Singleton in Java 5 world.
AND THERE ARE 5 WAY TO CREATE SINGLETON CLASS IN JAVA 1>>LAZY LOADING (initialization)
USING SYCHRONIZATION 2>>CLASS LOADING (initialization) USING private static final Singleton instance = new
Singleton(); 3>>USING ENUM 4>>USING STATIC NESTED CLASS
5>>USING STATIC BLOCK
AND MAKE CONSTRUCTOR PRIVATE IN ALL 5 WAY.
QUESTION NO: 2
Given the fragment: If thread a and thread b are running, but not completing, which two could be occurring?
A.livelock
B.deadlock
C.starvation
D.loose coupling
E.cohesion
Answer: A,B
Explanation:
A: A thread often acts in response to the action of another thread. If the other thread's action is also a response to the action of another thread, then livelock may result. A thread often acts in response to the action of another thread. If the other thread's action is also a response to the action of another thread, then livelock may result.
B: Deadlock describes a situation where two or more threads are blocked forever, waiting for each other.
QUESTION NO: 3
Given the code fragment:
What is the result?
A.Null B D
B.Null B null D
C.B D
D.D
E.An exception is thrown at runtime
Answer: C
QUESTION NO: 4
Given:
Which two are true?
A.A runtime exception is thrown on line 9.
B.No output is produced.
C.Greeting is printed once.
D.Greeting is printed twice.
E.No new threads of execution are started within the main method.
F.One new thread of execution is started within the main method.
G.Two new threads of execution are started within the main method.
Answer: C,E
Explanation:
Thread t2 is executed. Execution of T2 starts executionen of t1. Greeting is printed during the execution of t1.
QUESTION NO: 5
Given the code fragment:
What is the result?
A.getName (0): C:\
subpath (0, 2): C:\education\report.txt
B.getName(0): C:\ subpth(0, 2): C:\education
C.getName(0): education subpath (0, 2): education\institute
D.getName(0): education subpath(0, 2): education\institute\student
E.getName(0): report.txt subpath(0, 2): insritute\student
Answer: C
Explanation:
Example:
Path path = Paths.get("C:\\home\\joe\\foo");
getName(0)
-> home
subpath(0,2)
Reference: The Java Tutorial, Path Operations
Pegasystems PEGACPBA88V1 - Why not have a try? EMC D-PSC-MN-23 - We can promise that you will never miss the important information about the exam. With our Microsoft SC-100 exam questions, you will easily get the favor of executives and successfully enter the gates of famous companies. Although the three major versions of our CheckPoint 156-590 exam dumps provide a demo of the same content for all customers, they will meet different unique requirements from a variety of users based on specific functionality. EMC D-PWF-DS-23 - For most users, access to the relevant qualifying examinations may be the first, so many of the course content related to qualifying examinations are complex and arcane.
Updated: May 28, 2022